CVE-2010-4051 EXPLOIT
5.0
MEDIUM · CVSS 2.0 · EPSS 40% (pctl 99)
Patch early
A public exploit exists.
Description
The regcomp implementation in the GNU C Library (aka glibc or libc6) through 2.11.3, and 2.12.x through 2.12.2, allows context-dependent attackers to cause a denial of service (application crash) via a regular expression containing adjacent bounded repetitions that bypass the intended RE_DUP_MAX limitation, as demonstrated by a {10,}{10,}{10,}{10,}{10,} sequence in the proftpd.gnu.c exploit for ProFTPD, related to a "RE_DUP_MAX overflow."
Scoring
| CVSS | 5.0 (MEDIUM, v2.0) |
|---|---|
| Vector | AV:N/AC:L/Au:N/C:N/I:N/A:P |
| EPSS | 40% — more likely to be exploited than 99% of all CVEs |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2011-01-13 |
| Last modified | 2026-06-16 |
Affected (1)
| Vendor | Product |
|---|---|
| gnu | glibc |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | GNU libc/regcomp(3) - Multiple Vulnerabilities | 2011-01-07 |
References
- http://cxib.net/stuff/proftpd.gnu.c
- http://seclists.org/fulldisclosure/2011/Jan/78
- http://secunia.com/advisories/42547
- http://securityreason.com/achievement_securityalert/93
- http://securityreason.com/securityalert/8003
- http://securitytracker.com/id?1024832
- http://www.exploit-db.com/exploits/15935
- http://www.kb.cert.org/vuls/id/912279
- http://www.securityfocus.com/archive/1/515589/100/0/threaded
- http://www.securityfocus.com/bid/45233
- https://bugzilla.redhat.com/show_bug.cgi?id=645859
- https://lists.apache.org/thread.html/rc713534b10f9daeee2e0990239fa407e2118e4aa9e88a7041177497c%40%3Cissues.guacamole.apache.org%3E
- http://cxib.net/stuff/proftpd.gnu.c
- http://seclists.org/fulldisclosure/2011/Jan/78
- http://secunia.com/advisories/42547
- http://securityreason.com/achievement_securityalert/93
- http://securityreason.com/securityalert/8003
- http://securitytracker.com/id?1024832
- http://www.exploit-db.com/exploits/15935
- http://www.kb.cert.org/vuls/id/912279
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